

Thymosin Alpha-1
Thymic Peptide. Supplied in 5 and 10 mg vials, lyophilised and ready to reconstitute.
2 more vials to save 5%
Peptides ship as dry powder — you’ll need this to reconstitute the vial.
For laboratory research use only. Not for human or animal consumption, and not a drug, food, or cosmetic. Sold to qualified researchers and institutions.
About Thymosin Alpha-1
- Residues
- 28
- Molecular weight
- 3108.3 g/mol
- CAS number
- 62304-98-7
Thymosin alpha-1 (thymalfasin) is a 28-residue acidic peptide corresponding to a naturally occurring N-terminal fragment of prothymosin alpha, originally isolated from thymic tissue. In research it is characterised as an immunomodulatory thymic peptide that signals through Toll-like receptors (notably TLR2/TLR9) on dendritic cells and modulates T-cell, NK-cell and cytokine responses.
For laboratory research use only. Not for human or veterinary use.
Specifications
- Sequence
- SDAAVDTSSEITTKDLKEKKEVVEEAEN
- Molecular formula
- C129H215N33O55
- Molecular weight
- 3108.3 g/mol
- CAS number
- 62304-98-7
- Form
- Lyophilised powder
- Appearance
- White to off-white powder
- Solubility
- Soluble in bacteriostatic or sterile water
- Storage
- Store the lyophilised powder at -20°C, protected from light. Refrigerate reconstituted material at 2 to 8°C and use within its stability window.
- Purity
- 99.3%
- Lot
- PX-2404-C
- Test date
- May 2026
- Testing lab
- third-party
- Methods
- HPLC, LC-MS/MS
Certificate
Handling and storage
Reconstitute with bacteriostatic or sterile water. Store the lyophilised powder at -20°C, protected from light; refrigerate reconstituted material at 2 to 8°C. Handle under standard laboratory conditions.
Literature
- Immune Modulation with Thymosin Alpha 1 TreatmentKing R, Tuthill C · Vitamins and Hormones · 2016
Common questions about Thymosin Alpha-1
- What is Thymosin Alpha-1?
- Thymosin alpha-1 (thymalfasin) is a 28-residue acidic peptide corresponding to a naturally occurring N-terminal fragment of prothymosin alpha, originally isolated from thymic tissue.
- How is Thymosin Alpha-1 supplied?
- Thymosin Alpha-1 is supplied as a lyophilised (freeze-dried) powder in 5 mg and 10 mg vials, for laboratory research use only.
- How should Thymosin Alpha-1 be stored and handled?
- Reconstitute with bacteriostatic or sterile water. Store the lyophilised powder at -20°C, protected from light; refrigerate reconstituted material at 2 to 8°C. Handle under standard laboratory conditions.
- Has this batch of Thymosin Alpha-1 been independently tested?
- Yes. Lot PX-2404-C was tested at 99.3% by an independent laboratory. The full certificate of analysis is published and searchable by lot code on the verify page, before and after purchase.
- Is Thymosin Alpha-1 for human use?
- No. Thymosin Alpha-1 is supplied strictly for in vitro laboratory research. It is not for human or animal consumption, and is not a drug, food, or cosmetic.
Researchers also study
Reconstitution
A measurement aid for laboratory handling. For research use only.
Need the syringe mark, a round-number draw, or a U-40 reading? Open the full calculator with this 5 mg vial loaded.


